No juice that has been concentrated then had water, preservatives, extra sugar and so on thrown into it can't be as good as real juice with nothing added or taken away.
Polish gravel is better than everyone else's too, right?
Gravel from where I live is some of the best. Laid down by a prehistoric ancestor of the Thames, full of flinty goodness.
the superior quality of the bark on the trees
I'd go for Portuguese cork oak for that. Leszczyna pospolita loses its rough bark as it gets older and can be found all across northern Europe.